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Eating at night is dangerous for the brain

06.01.2016

Scientists said that eating during the hours that are usually given to night sleep harms not only the figure, but also the brain: memory begins to deteriorate due to upset circadian rhythms.

Geneticist Don Loh (Dawn Loh) and her colleagues at the University of California at Los Angeles conducted their experiment on mice that are nocturnal. For two weeks, one group of rodents was fed only between nine in the evening and three in the morning, and the other - only after nine in the morning.

Although the mice in both groups slept the same amount of time, those fed at night began to have trouble sleeping (waking up more often). In addition, their daily rhythms went wrong, which affected the production of proteins - including those responsible for memory and the learning process. As a result, mice that ate at bedtime began to perform worse on memory tests.

It is not yet clear how strong the negative effect of nighttime eating on a person is, Lo notes. However, it is already known that people who work the night shift are worse at solving intelligence problems.

In 2014, scientists found that circadian rhythms do not only respond to light, they are also shifted by certain chemicals in food. Makoto Akashi of Yamaguchi University conducted experiments on single cells and live mice and found that insulin shifts circadian rhythms in some tissues. Apparently, in this way the body synchronizes the "gastric clock" with the time of eating, achieving optimal functioning of the digestive system.

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